| Official Zip Code Name | Buffalo Gap |
| Zip Code State | South Dakota |
| Primary County: | Custer |
| Area Code | 605 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 7 |
| Elevation Range | 3267 ft. |
| Area | 544.715 Sqm. |
| Coordinates(Y,X) | 43.514831, -103.250360 |